Now, in its latest attack on soda and school vending machines, CSPI has dredged up a single additional study to help its soda-causes-obesity case. But that study’s authors readily admit: “Unfortunately, the sample size was too small to provide sufficient power for the observed difference in weight gain to be statistically significant.” That’s because their study is based on a meager sample of 21 children. The authors also note that “Similar trends in weight gain, just stronger, was [sic] observed with excessive consumption of fruit juice.” In fact, the study found that children who drank more than 12 ounces of fruit juice (a CSPI-approved beverage) each day gained three times as much weight as kids who consumed a similar amount of soda (a beverage CSPI hates).